Spring bed-bottom



S. CALHOUN. Spring Bed Bottom.

No. 237,726. Patented Feb. 15,1881.

Q I I I QWWLDNQX I N. PETERS PHOTO-UTHCGRAPHER. WASHINGTON. D

UNiTnD STATES SAMUEL CALHOUN, OF EDINBURG, OHIO.

SPRING BED-BOTTOM.

SPECIFICATION forming part of Letters Patent No. 237,726, dated February 15, 1881.

Application filed September 1, 1879.

To all whom it may concern:

Be it known that I, SAMUEL CALHOUN, of Edinburg, Portage county, Ohio, have invented a new and useful Improvement in Spring Bed- Bottoms, of which the following is a specification.

The invention relates to spring bed-bottoms having adjustable spring-heads.

The object of my invention is to provide a Windlass having its cord connected with a hinged arm or arms for elevating and lowering the spring-head; also, to adjust by screws the relative positions of the cross-bars which support the spring-bottom, to connect the springs and slats by hooks, and toprovide the headslats with links and springs lengthwise from the lower ends of the slats and connected with a rock-shaft.

In the drawings, Figure 1 is a plan. Fig. 2 is a longitudinal vertical section. Fig. 3 represents the connection of a slat with its spring by a link.

The ends of cross-bars a a which support slats c, with their springs 8, rest in boxes z. These boxes are attached to the inside of rails a a near the head and foot of the bed, and are open toward the foot and the opposite side of the bed to admit the cross'bars M. The bottom slats, 6, rest on springs s, attach ed to cross-bars a by clasps n, which are firmly pressed on the wire forming the spring by screws enteringthe cross-bar. Each of springs s is formed of two wire spirals at each side of slat 6, connected by the wire passing under the slat through hook m. The double hook as connects spring 8 with slat e by entering a hole through the slat. At each end of one of the cross-bars a a screw, 0, passing through the cross-bar and the end of box 2, is provided, with a threaded nut, 0. When slats e have been placed in position with hooks 0c in the holes of the slats, by turning nut 0 on screw 0 to force the cross-bars farther apart, the books .40, connected with springs s on each crossbar of M, are thereby drawn against opposite sides of the two series of holes in slats e for the purpose of preventing the hooks to from becoming dislodged from the holes in the slats. By turning nut o in the opposite direction hooks :0 become loose in slats 0, so that the slats may be removed from the hooks and replaced with their bottom sides up when they have become slightly bent by long-continued use. Spring s projects above the bottom of slat e, on each side of it, and thus acts as lateral brace to the slat.

The elevator or spring-head, composed of a series of slats, c, with their springs and frame, turns on its rock-shaft c in side rails, out. Its frame is formed of the rock-shaft, side bars, 6 e, and upper cross-bar, b. The bars 0 e are bent or curved upward over cross-bar a to permit the hea d-slats c to be sufficiently lowered. Slats 0 near their upper ends, are connected with cross-bar b by springs 8 which are similar to springs 8. Bar 1), springs 8 and slats c are connected in the same manner as bars a springs s, and slats 0, except that springs s are attached to the under side of their slats by wire staples. The lower end of each head-slat c is connected with rock-shaft c by link so and spring g. One end of the wire forming the spiral spring g extends back through the spiral and rock-shaft c, where it forms a loop or book, which is connected with the lower end of slat c by link as, both link and spring being in line with the slat.

The head-slats are elevated and lowered by means of a Windlass consisting of a roller, f, turning in side rails, a a, by applying a crank at one end, and the ropes or cords s 8, attached to the lower end of the curved arm w. Arm

to is formed of a rod bent as shown in Figs.

1 and 2, and having its upper ends hinged to cross-bar b. In raisingand lowering the headslats the direction of arm to is changed by its contact with the top of roller f, against which it slides, to prevent the lower end of the arm striking either the bed or the floor on which the bed stands. The ratchet-wheel a on roller f near one end connects with pawl c, which turns on a pin in the inner side of rail a. When the head-slats c are to be lowered pawl c is disconnected with ratchet-wheel a, by pressing with the hand on small lever 71, having its fulcrum on rail a, and connected by link c with pawl c.

I claim as my invention- A spring bed-bottom provided with a head- 9, the slat 0 link x, and spiral spring 9 being elevat0r,in which the hearl-slats at their upper in line with each other, substantially as deends, rest on springs and are connected at scribed.

their lower ends with the spiral springs g by SAMUEL CALHOUN. 5 intermediate links, x,hi11ge-j0inted t0 the slats Witnesses:

c and springs g,.in combination with a rock- BRADFORD HOWLAND,

shaft, 0, situated between links 00 and springs GEORGE F. ROBINSON. 

